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Research of Digital Ultrasonic Inspection System Based on FPGA and DSP

Author: ZhengChao
Tutor: WangXueMei
School: Southwest Jiaotong University
Course: Measuring Technology and Instruments
Keywords: Vehicle parts detection Digital ultrasonic detection system FPGA DSP USB
CLC: TP274.53
Type: Master's thesis
Year: 2010
Downloads: 280
Quote: 3
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Abstract


With the implementation of the strategy of China's high-speed railway overloaded rail transport steady improvement in the speed and capacity of railway rolling stock in the new shoulder the historical responsibility and mission while also facing more serious traffic safety test. The stability of the the locomotive vehicle parts performance is an important guarantee of the safe operation of trains, varying degrees of damage in the case of long-term operation, these parts can easily transport pose a threat to railway safety, serious and even caused a major traffic accident. Therefore, the use of advanced detection technology and equipment of rolling stock in service parts the timely overhaul, to ensure traffic safety and accelerate the implementation of the Railway Development Strategy has important practical significance. The thesis focuses on the problems and shortcomings of the simulation of the field of ultrasonic testing of railway vehicle detection system, proposed a set of FPGA and DSP as the core digital ultrasonic testing system solutions, to achieve a high-frequency, low-amplitude ultrasound analog signal acquisition , processing, storage and transmission. The paper completed the hardware circuit design of the detection system. Systems use high-speed broadband amplifier AD8099 and AD603 ultrasonic echo signal conditioning, and the signal after the sampling frequency of 40MHz 8-bit high-speed analog-to-digital converter TLC5540 on conditioning sample quantization; system to of FPGA devices EP1C3T144C8 and DSP devices TMS320F2812 In addition, the system uses the USB controller CY7C68013 as an interface to communicate with the host computer to complete acquisition of data transmission control module core, to solve the problem of the ultrasonic echo high-speed data stream processing; The papers in FPGA development software Quartus Ⅱ system logic control functions and data cache module design and simulation, and verify the effectiveness of software design; system acquisition and control software development using C language DSP integrated development environment CCS work; addition, Keil environment to write and debug of USB firmware. Papers on the basis of complete system hardware and software design, the vehicle laboratory digital ultrasonic testing system designed functional testing. The test results proved that the detection system is able to meet the requirements of of ultrasonic testing required for high-speed data acquisition, processing and transmission of the extent of the ultrasonic testing system automation and intelligent, highly theoretical significance for the improvement and development of ultrasonic testing and practical significance.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Automatic detection system using a variety of new technologies > Ultrasonic testing equipment
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